Lariggan River at Wherry Town Bridge
EA name: LARIGGAN RIVER AT WHERRY TOWN BRIDGE
Environment Agency sampling point SW-82111903 · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)
These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.
Where and when
- Last sampled
- 4 Nov 2025, 11:5011 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 30 Sep 2026 and had nothing newer.
- Samples banked
- 41 since 3 May 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 146750, 29450As published, to the nearest 10 m. Open in a map
- River, by its own name
- Lariggan
- River, by the map
- Not placedIts name gives Lariggan; the only line close by, 3 m away, is Larriggan River and is not traced into it. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Planned investigation (local monitoring) (41 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
96.6%
Sampled 4 Nov 2025, 11 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Nov 2025, 11:50 | 96.6 | 96.6% |
Water temperature
code 0076 · °C
13.5 °C
Sampled 4 Nov 2025, 11 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Nov 2025, 11:50 | 13.5 | 13.5 °C |
pH
code 0061
7.13
Sampled 4 Nov 2025, 11 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Nov 2025, 11:50 | 7.13 | 7.13 |
Conductivity
at 25 °C · code 0077 · µS/cm
189 µS/cm
Sampled 4 Nov 2025, 11 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Nov 2025, 11:50 | 189 | 189 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
33000 per 100 ml
Sampled 4 Nov 2025, 11 months ago · 41 results banked
Every result (41)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Nov 2025, 11:50 | 33000 | 33000 per 100 ml |
| 16 Sep 2025, 13:21 | 1100 | 1100 per 100 ml |
| 12 Sep 2025, 10:35 | 6500 | 6500 per 100 ml |
| 1 Sep 2025, 11:33 | 6700 | 6700 per 100 ml |
| 29 Aug 2025, 11:36 | 15000 | 15000 per 100 ml |
| 21 Aug 2025, 10:33 | 1100 | 1100 per 100 ml |
| 11 Aug 2025, 12:50 | 3100 | 3100 per 100 ml |
| 7 Aug 2025, 13:25 | 1000 | 1000 per 100 ml |
| 30 Jul 2025, 12:03 | 5400 | 5400 per 100 ml |
| 24 Jul 2025, 10:38 | 2100 | 2100 per 100 ml |
| 13 Jul 2025, 12:20 | 730 | 730 per 100 ml |
| 9 Jul 2025, 10:32 | 510 | 510 per 100 ml |
| 30 Jun 2025, 12:30 | 980 | 980 per 100 ml |
| 23 Jun 2025, 12:20 | 880 | 880 per 100 ml |
| 17 Jun 2025, 12:56 | 790 | 790 per 100 ml |
| 11 Jun 2025, 10:18 | 3400 | 3400 per 100 ml |
| 6 Jun 2025, 11:49 | 1600 | 1600 per 100 ml |
| 29 May 2025, 12:35 | 1600 | 1600 per 100 ml |
| 24 May 2025, 10:13 | 4100 | 4100 per 100 ml |
| 20 May 2025, 12:27 | 730 | 730 per 100 ml |
| 6 May 2025, 12:08 | 970 | 970 per 100 ml |
| 19 Sep 2024, 11:24 | 1000 | 1000 per 100 ml |
| 9 Sep 2024, 12:10 | 6500 | 6500 per 100 ml |
| 4 Sep 2024, 10:03 | 540 | 540 per 100 ml |
| 28 Aug 2024, 11:39 | 12000 | 12000 per 100 ml |
| 22 Aug 2024, 10:15 | 3600 | 3600 per 100 ml |
| 12 Aug 2024, 11:37 | 530 | 530 per 100 ml |
| 8 Aug 2024, 11:25 | 28000 | 28000 per 100 ml |
| 3 Aug 2024, 12:45 | 1300 | 1300 per 100 ml |
| 26 Jul 2024, 10:35 | 840 | 840 per 100 ml |
| 19 Jul 2024, 12:12 | 910 | 910 per 100 ml |
| 11 Jul 2024, 10:15 | 1100 | 1100 per 100 ml |
| 7 Jul 2024, 10:07 | 2500 | 2500 per 100 ml |
| 27 Jun 2024, 10:45 | 1800 | 1800 per 100 ml |
| 19 Jun 2024, 10:20 | 430 | 430 per 100 ml |
| 12 Jun 2024, 11:33 | 520 | 520 per 100 ml |
| 7 Jun 2024, 11:42 | 430 | 430 per 100 ml |
| 28 May 2024, 11:22 | 1200 | 1200 per 100 ml |
| 22 May 2024, 12:40 | 1500 | 1500 per 100 ml |
| 17 May 2024, 12:15 | 380 | 380 per 100 ml |
| 3 May 2024, 12:42 | 2100 | 2100 per 100 ml |
Everything measured here
18 determinands, each kept by its code, unit and sample material: results in different units or on different materials are never mixed. A “below” result is under the laboratory's detection limit, not zero.
Show all 18 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 1 | Nov 2025 – Nov 2025 | 96.6% 4 Nov 2025 |
| Temperature of Water 0076 | River water | 1 | Nov 2025 – Nov 2025 | 13.5 °C 4 Nov 2025 |
| pH 0061 | River water | 1 | Nov 2025 – Nov 2025 | 7.13 4 Nov 2025 |
| Conductivity at 25 C 0077 | River water | 1 | Nov 2025 – Nov 2025 | 189 µS/cm 4 Nov 2025 |
| Escherichia coli : Confirmed : MF 2348 | River water | 41 | May 2024 – Nov 2025 | 33000 per 100 ml 4 Nov 2025 |
| Bacteroides HF183 primer 5886 | River water | 4 | Aug 2024 – Sep 2025 | Present / 100ml 12 Sep 2025 |
| Bacteroidetes Marker : Human copy number 3820 | River water | 4 | Aug 2024 – Sep 2025 | 5.5 log (10) gene copies / 100ml 12 Sep 2025 |
| Bacteroidetes Marker : Ruminant 4906 | River water | 4 | Aug 2024 – Sep 2025 | Not found in test 12 Sep 2025 |
| Bacteroidetes Marker : Ruminant copy number 3819 | River water | 4 | Aug 2024 – Sep 2025 | below 2 log (10) gene copies / 100ml 12 Sep 2025 |
| Catellicoccus Marker : Seabird 3120 | River water | 2 | Aug 2025 – Sep 2025 | Present 12 Sep 2025 |
| Catellicoccus Marker : Seabird Copy Number 3116 | River water | 2 | Aug 2025 – Sep 2025 | 4.7 log (10) gene copies / 100ml 12 Sep 2025 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 41 | May 2024 – Nov 2025 | 11000 colony forming units / 100ml 4 Nov 2025 |
| Microbial Source Tracking 4876 | River water | 4 | Aug 2024 – Sep 2025 | 1 text result 12 Sep 2025 |
| Mitochondrial Marker : Canine 4870 | River water | 2 | Aug 2025 – Sep 2025 | Present 12 Sep 2025 |
| Mitochrondrial Marker: Canine copy number 3816 | River water | 2 | Aug 2025 – Sep 2025 | 3.3 log (10) gene copies / 100ml 12 Sep 2025 |
| MST Filtration 4926 | River water | 41 | May 2024 – Nov 2025 | DNA Stored 4 Nov 2025 |
| Preparation: DNA 5923 | River water | 4 | Aug 2024 – Sep 2025 | Done 12 Sep 2025 |
| Volume of Sample Filtered 4865 | River water | 41 | May 2024 – Nov 2025 | 260 millilitre 4 Nov 2025 |
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.